What component to use when selecting from 9 consecutive numbers?

I'm creating a mobile application, sticking to Material Design guidelines and components for the most part.
In that application I want the user to select a group and then get some detailed info on that group. The groups are numbered consecutively.

I want those groups to be as easy to select as possible, because most of the time, the users will want the last groups, but there's no one group that could be used as a reasonable default.

That's why I want to create a component that allows instant selection of whatever option. The group labels are going to be 0-8 digits (repeated Group feels awful), so I feel like a MD dropdown is a waste of space and the options will feel empty, lacking something, as they are very spacious and meant to be used with long labels

So I thought that segmented control would be a good idea. But it turned out that the buttons were pretty small on a mobile screen (9 choices in a single row, splitting it into more rows also kind of doesn't appeal)

So my thoughts circled around something that looks like an MD seekbar, but without the "progress" part to the left of the handle.

And still I'm not satisfied, I feel like this is an entirely different component that has a different meaning. But at least it should work well on a small screen, as it is easy to drag the handle around.

What option should I choose? Am I even on the right track with this and are these final options appropriate?